Effect of pasture and feeding systems on hematological traits of ewes and lambs

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dc.authorid0000-0002-6135-4502
dc.contributor.authorTolu, Cemil
dc.contributor.authorOral, Hulya Hanoglu
dc.contributor.authorAlaturk, Firat
dc.contributor.authorGokkus, Ahmet
dc.date.accessioned2026-02-03T11:59:39Z
dc.date.available2026-02-03T11:59:39Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractContext Sustainable livestock production depends on efficient pasture management and the continuous monitoring of the health of grazing animals. Objectives This study investigated the effects of pasture types and sheep production systems on the hematological traits of Karacabey Merino (German Mutton Merino x K & imath;v & imath;rc & imath;k) ewes and lambs grazing on different pasture types throughout the year and reared in a semi-intensive system (control group). Methods In this twenty-six-month study, the hematological characteristics of ewes and lambs grazing on natural pastures and in spring (triticale and oat grass pasture), summer (sorghum Sudangrass and wheat stubble pasture), and autumn (triticale and oat grass pasture) were compared with ewes and lambs reared in a semi-intensive system (no pasture for lambs). A total of 36 ewes (aged 3-4 and 65.2 +/- 0.55 kg) and 98 lambs were used. There were 12 ewes in total in each treatment group and four ewes in subgroups. Each subgroup in the pasture was separated by fences. The 12 ewes tagged in the control group were within the unit sheep flock. Blood samples were taken from the jugular vein of ewes and lambs at three to four-week intervals during live weight weighing using 3-4 mL edged tubes and transported in the cold chain to the laboratory for analysis. Results Pregnant ewes grazing on natural autumn pasture had significantly lower red blood cell (RBC), hemoglobin (HGB), and platelet (PLT) counts (P < 0.05). Animals grazing on wheat stubble pasture exhibited higher hematological values compared to those grazing on Sorghum-Sudangrass pasture (P < 0.05). Lambs in the control group had lower hemoglobin (HGB) and hematocrit (HCT) levels during the post-weaning period than those in the pasture group (P < 0.05). Conclusions The hematological parameters of pregnant Karacabey Merino ewes grazing on natural pastures during the autumn season, as well as those of lambs raised in a semi-intensive system during the post-weaning period, should be carefully monitored. Additionally, appropriate feed supplementation, along with vitamin and mineral support, should be provided to maintain animal health and physiological balance.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye [214O233]
dc.description.sponsorshipThis study was funded by The Scientific and Technological Research Council of Turkiye (Project number: 214O233). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
dc.identifier.doi10.7717/peerj.19846
dc.identifier.issn2167-8359
dc.identifier.pmid40895043
dc.identifier.scopus2-s2.0-105015078351
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.7717/peerj.19846
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34352
dc.identifier.volume13
dc.identifier.wosWOS:001569110300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherPeerj Inc
dc.relation.ispartofPeerj
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectKaracabey merino sheep
dc.subjectSorghum-sudangrass
dc.subjectRed blood cell
dc.subjectTriticale and oat grass
dc.subjectWheat stubble
dc.subjectPregnant
dc.subjectPost-weaning period
dc.titleEffect of pasture and feeding systems on hematological traits of ewes and lambs
dc.typeArticle

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